History of changes - Abstract class, comparing and operator overloading

Date	Action	Name		Text
3/10/2021 5:57	Edited		Filip Smolík
1/11/2020 6:28	Edited		David Capka Hartinger
1/5/2019 7:23	Edited		David Capka Hartinger
5/24/2018 12:02	Edited		David Jancik	compilers update
4/18/2017 12:17	Edited		David Jancik	Compiler tokens regenerated
1/3/2017 5:34	Edited		David Capka Hartinger
12/16/2016 11:40	Edited		David Capka Hartinger	Typo fixed
12/5/2016 11:59	Edited		David Capka Hartinger	Minor text fixes
10/28/2016 19:15	Edited		Matthias Quintero
10/27/2016 8:47	Edited		David Capka Hartinger
10/27/2016 8:46	Edited		David Capka Hartinger	Article syntax enhancements
9/4/2016 19:11	Edited		Matthias Quintero	Revised and edited.
8/29/2016 11:57	Edited		David Capka Hartinger
5/13/2016 11:25	Edited		David Capka Hartinger
5/13/2016 9:30	Edited		David Capka Hartinger
5/9/2016 9:28	Edited		David Capka Hartinger
5/6/2016 12:02	Published		David Capka Hartinger
4/25/2016 10:11	Submitted for approval		Vikipedia